Music box device

ABSTRACT

A music box device whose constitution member is put together into a unit is provided. A pedestal housing  36  for storing therein a spring  38  as well as a pedestal  30  for supporting a spring gear  58  and speed increasing gear trains  32 , and  33  of a governor mechanism  24  are formed with synthetic resin mould to be united therewith. A rotating shaft of the speed increasing gear train  32  of the governor mechanism  24  and a rotating shaft  26  of the governor rotating body  25  are supported in cooperation with the pedestal  30  and a spring storage box  36 , thus a spring power source unit supplying controlled stable rotating output is constituted.

TECHNICAL FIELD

The present invention relates to a music box device which plays avibration plate with pins provided on surface of a rotary drum.

BACKGROUND

A conventional music box, as indicated in U.S. Pat. No. 4,557,173,includes a KOUBAKO (a spring storage box) storing therein the spring, arotary drum driven in one direction in accordance with release of storedforce of the spring, a sound vibration valve (hereinafter referred to asonly vibration plate) sounding while being played with engaging pinprovided on the surface of the rotary drum, a governor mechanism forrotating the rotary drum with fixed speed, gear train for coupling thegovernor mechanism and the spring. Such functional membersdescribed-above are mounted directly on a casting metallic frame made ofzinc die casting or iron or so forth. Further, a member which includes apart of supporting section of gear train and one side of bearing sectionthat supports a governor rotating body, which member leads a brakingsection of the governor mechanism from the spring storage box, is formedwith synthetic resin in a body.

However, since the bearing section which supports rotary members such asthe governor rotating body and respective gears and so forth isintegrated with the frame concentrically, shape of the frame becomescomplicated, so processing is difficult. Further, a casting metal suchas a zinc die casting and so forth to be material of the frame has largecoefficient of friction. Accordingly, when a rotary member which rotatesin high speed is supported directly on the frame, rotation transferefficiency of the gears deteriorates, thus the spring with small storedcapacity of driving force becomes disadvantage.

So, it is an object of the present invention to provide a music boxdevice in which a bearing section of a rotary member is formed withsynthetic resin separately from the frame so as to improve a rotationtransfer efficiency of a gear, and in which a spring, a gear train, anda governor mechanism are configured as one body unit to facilitateinstallation for the frame.

DISCLOSURE OF INVENTION

The music box device concerning the present invention, whose springdrive mechanism and governor mechanism are constituted as a supportingunit formed from a pedestal made of synthetic resin, which is supportedindependently to be separated from a base frame, therefore, in a fewchances, fault of the base frame affects the supporting unit. Thus it iscapable of improving drive performance of the music box. Further, whenindividual fault portion or repair portion in the drive mechanism, thegovernor mechanism and so forth occurs, partial exchange in every unitbecomes possible, thus management cost for repair can be reduced.Furthermore, assembling in every unit of the drive mechanism, thegovernor mechanism and so forth and parts management become easy, thusit is capable of scheming improvement of production efficiency. Inparticular, it becomes possible to execute production in every unit ofthe drive mechanism, the governor mechanism and so forth as well asfinal assembling to the music box device in the optimum production arearespectively, thus it is capable of reducing production cost.

Further, since a bearing section for supporting a speed increasing geartrain of the governor mechanism and a governor rotating body is made ofsynthetic resin as a part of a supporting unit, friction loss of abearing is reduced, thus it is capable of transferring stored force of aspring in high efficiency without loosing en route for transferring,therefore, it is capable of extending a performance time of the musicbox.

On the other hand, there is provided a hooking member with which apedestal and a pedestal housing are engaged in the neighborhood of atransfer gear to prevent separation of a contact close section ofU-shaped opening supporting section caused by torque of a rotary drum,and outer periphery of opening section of a spring storage section isformed continuously, further strengthening opening section of the springstorage section while covering the opening section with cylindricalconvex edge of the pedestal. Even though the supporting unit is made ofsynthetic resin, it is capable of preventing deformation caused byrepulsion force of the spring, accordingly, it is capable of securingsufficient strength capable of withstanding load caused by springdriving.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a plan view indicating a first embodiment of a music boxdevice concerning the present invention.

FIG. 2 is a side view of supporting unit in the first embodiment of themusic box device concerning the present invention.

FIG. 3 is a front view of a spring storage box,side of the supportingunit of the first embodiment of the music box device concerning thepresent invention.

FIG. 4 is a front view of a pedestal side of the supporting unit in thefirst embodiment of the music box device concerning the presentinvention.

FIG. 5 is an exploded perspective view of a unit in a second embodimentof the music box concerning the present invention.

FIG. 6 is a side view indicating relationship between a rotary drum anda bearing frame in fragmentary sectional view in a third embodiment ofthe music box concerning the present invention.

FIG. 7 is a side view indicating relationship between a rotary drum anda bearing frame in fragmentary sectional view in a fourth embodiment ofthe music box concerning the present invention.

FIG. 8 is a side view indicating relationship between a rotary drum anda bearing frame in fragmentary sectional view in a fifth embodiment ofthe music box concerning the present invention.

FIG. 9 is a side view indicating relationship between a rotary drum anda bearing frame in fragmentary sectional view in a sixth embodiment ofthe music box concerning the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, there will be described about an embodiment of a music boxdevice concerning the present invention in accordance with a drawing ofthe first embodiment. FIG. 1 is a plan view indicating the whole ofmusic box device 10. FIG. 2 is a side view indicating section of asupporting unit 40. A base frame 12 is formed y drawing of causing metalplate material, for instance, thin steel plate of 1.2 mm thick to besubjected to plastic deformation. Ribs 13 a, 13 b, 13 c, and 14 areprovided for the sake of improvement of stiffness. Discontinuity partsof the base frame 12 caused by a lack portion such as hole aftercut-raising processing is relieved to keep suitable sound quality.Further, it is also suitable of causing surface of metal plate materialto undergo work hardening while performing grain-processing to thesurface of the metal plate material to improve intensity and flatness.Here, the grain-processing is that press pressing processing such ascoining processing is performed on a surface of metal plate and soforth. According to this processing, grain shaped press patterns areformed uniformly on the whole surface. Furthermore, it is suitable thatthickness of the metal plate material is capable of being subjected toplastic processing. Thickness is suitable not more than 3 mm.

Reference numeral 15 is a vibration plate. A vibration plate mountingsurface of a vibration plate mounting stand 16, which is provided at thebase frame 12 is formed broader than surface of the base 17 of thevibration plate 15. The whole surface of the vibration plate base 17 ofthe vibration plate 15 is fixed firmly with tapping screw 16 a such thatthe vibration plate 15 is adhered to the vibration plate mountingsurface closely. Thus it is capable of improving sound quality whilereducing transfer loss of the vibration due to the fact of causing thepart near the base of a valve of the vibration plate at least to beadhered to the vibration plate mounting stand. Further, in the base 19of the base frame 12, three points of small areas of convex surfaceformed at the alienated position mutually that occupy the apexes of atriangle are taken to be mounting stands 20. Three points withoutexisting on the same straight line demarcate a plane. Even though thereare some unevenness on the mounted surface, since the plane demarcatedfrom three points gauges the mounted surface, it is capable of mountingthe base frame 12 surely without unstableness, thus making transfer ofexcellent sound to the mounted body such as jewel box and so forthpossible. A protrusion from the base frame 12 of the vibration platemounting stand 16 is R-shaped portion.

The ribs 13 a, 13 b, 13 c, and 14 stiffen stiffness of the base frame 12according to plastic deformation processing of thin steel plate. Theribs 13 a, 13 b, 13 c, and 14 are ridge-shaped convex sections whosesection continues with arc shaped protruded. A rib group is constitutedfrom two ridges of the ribs 13 a, and 13 b elongating to under part ofmounted position of a rotary drum 22 from the vibration plate mountingstand 16, and the rib 13 c which unites these ribs. The rib group andthe vibration plate mounting stand form four-sided section at under sideof the vibration plate 15 and the rotary drum 22. Even though the baseframe 12 undergoes stress from its external environment, relatedposition between the vibration plate 15 and the rotary drum 22 does notchange easily because the base frame 12 does not curve due to the ribgroup. Namely, it is prevented fluctuation of engaged distance betweenpointed ends which are drawn up in a line of a comb-shaped vibrationvalve 78 formed on the vibration plate 15 and engaging pin 80 set onouter peripheral surface of the rotary drum 22 so that it is capable ofbeing maintained the engaged distance accurately.

Another rib 14 exists while surrounding outer peripheral portion of theneighborhood of the bearing of a worm 27 to be a rotating shaft 26 of agovernor rotating body 25 from the vibration plate mounting stand 16 inarc shaped condition. The rib 14 stiffs stiffness of the base frame 12in the neighborhood of a governor device. Governor operation of agovernor rotating body 25 which rotates in high speed of a governormechanism 24 is not prevented from deformation of the base frame 12, arotation of the governor rotating body 25 is stable, thus it is capableof maintaining governor operation surely.

In FIG. 1 to FIG. 4 indicating the first embodiment, Reference numeral30 is a pedestal supporting a speed increasing gear train 34 consistingof composite spur gears 31, 32, and 33, and the worm 27. Referencenumeral 36 is a pedestal housing including a spring storage section 36 afor storing therein a spring 38 to be drive source of a music box.Reference numeral 39 is a spring winding shaft. Further, FIG. 3 and FIG.4 are respective front views of a pedestal 30 and a pedestal housing 36.

Reference numeral 40 is a supporting unit consists of two members ofdivided the pedestal 30 and the pedestal housing 36 that are constitutedas separated members from the base frame 12. The supporting unit 40supports the governor mechanism 24 with the governor mechanism 24surrounded according to two members of the pedestal 30 divided into theupper and the lower sides in the direction of the shaft of the springwinding shaft 39 as well as the pedestal housing 36. The governormechanism 24 includes the speed increasing gear train 34 which radiatesthe stored force while controlling stored force of the spring 38 to be aspring drive mechanism driving the rotary drum 22 and the spring windingshaft 39 and the spring 38. Namely, the supporting unit 40 holds thespring drive mechanism and the governor mechanism as separatedindependent unit from the base frame. Thus, when the spring and thegovernor mechanism to be a drive source are taken to be one body of unitwhich is a separated standard unit from the base frame, parts managementand assembling become easy. It is capable of reducing product cost.Further, it is suitable that the supporting unit is divided into twomembers in the direction of an output shaft 70 without dividing into twomembers in the direction of shaft of the spring winding shaft 39.Furthermore, the spring winding shaft 39 also can be provided in such away of causing the spring winding shaft 39 to be parallel to the base ofthe base frame 12 and to be perpendicular to rotating shaft of therotary drum.

Both the pedestal 30 and the pedestal housing 36 are made of syntheticresins mould. A connected portion is combined into one body according toan appropriate means such as caulking or adhesion, thus the supportingunit 40 is formed. An opening 50 for bearing for rotationally supportingone side of shaft 66 of the rotary drunk 22 as well as a bearing hole 72for supporting one end of an output shaft 70 are provided at an outerside surface of the supporting unit 40. Further, a positioning pin 30 bfor controlling installation position accurately is provided at the baseof the supporting unit 40 opposite to the base frame 12. It is capableof performing easily coupling assembly between another members such asthe rotary drum 22, the output shaft 70, the base frame 12 and so forthand the supporting unit with accurate position relationship maintaineddue to the positioning pin 30 b. Furthermore, the pedestal housing 36 isdesirable to be made of synthetic resin. However, when powerful springis employed, it is suitable to form only the spring storage section 36 aor the whole of the pedestal housing 36 by press while performing pressprocessing high strength metal plate in order to secure intensity of thespring storage section 36 a.

In the composite spur gears 32, and 33 of the speed increasing geartrain 34, respective large and small spur gears and the rotating shaftare formed integrately. Bearings of respective rotating shaft areconstituted by U-shaped upper-opening supporting sections 42, and 43 ata bearing support of the pedestal 30. The rotating shaft is assembled tobe supported rotationally while fitting to be inserted the rotatingshaft to be thrown down from the opening end section side.

However, the rotating shaft of the composite spur gear 32 is subjectedto an interaction both of rotation torque of the composite spur gear 31,which demarcates one side of the rotating drum 22 integrately integratedwith a small bevel gear 65 describe later and braking torque dependingon the governor mechanism 24. The rotating shaft of the composite spurgear 32 develops a tendency to float up while being subjected to forcein the direction of the opening-end section of the upper-openingsupporting section 42. The rotating shaft of the composite spur gear 32is attempted to deviate from stable bearing position. So, concerning thebearing of the composite spur gear 32, a supporting surface 44 providedat a part of the pedestal housing 36 is set to an opening-end 42 a ofthe upper-opening supporting section 42, so that floating of therotating shaft caused by force in the direction of the opening-endsection is prevented. Namely, the bearing of the composite spur gear 32is constituted from divided two parts of the side of the pedestal 30 andthe side of the pedestal housing 36.

Further, the force which causes the rotating shaft of the composite spurgear 32 to be forced in the direction of the opening-end section of theupper-opening supporting section 42, gives load to the pedestal housing36 in the degree that the force deforms the pedestal housing 36.Accordingly, there are some possibilities of occurrence of a gap betweencontacted surfaces with each other while being alienated the supportingsurface 44 from the opening-end 42 a. In order to prevent the occurrenceof the gap, it causes a square hole 42 b to be perforated in theelongated portion toward FIG. 4 upper side of a bearing supportincluding the upper-opening supporting section 43 which supports therotating shaft of the composite gear 33. There is provided an engagingmember at the side, of the pedestal housing 36. The engaging membermeshes to be engaged with the square hole 42 b. The engaging member is ahook 43 a projecting from a leg base 43 c elongated toward lowerdirection of the pedestal housing 36. When it causes the U-shapedupper-opening supporting section 43 to be stopped up while permittingthe leg base 43 c to be touched to the opening-end surface 43 d of theupperopening supporting section 43 at the side of the pedestal 30, thehook 43 a is inserted into the square hole 42 b, thus being preventedfloating of supporting surface 44 of the pedestal housing. (referring toFIG. 3 and FIG. 4)

Further, a leg portion 43 b with the hook 43 a is formed withelasticity. When the hook 43 a is inserted into the square hole 42 b,outer surface of the leg portion 43 b comes into contact with an innersurface of the bearing support of the pedestal 30 provided with thesquare hole 42 b, thus relative position is decided between twoupperopening supporting sections 42 and the supporting surface 44.

Since a storage section 36 a of a spring 38 in the pedestal housing 36is formed with sufficient depth capable of accommodating width of thespring 38, even though the pedestal 30 is removed from the pedestalhousing 36 with the supporting unit 40 disassembled, there is nounexpected accident that released spring 38 flies out of the springstorage section 36 a caused by free rebounding of remaining storedforce.

Further, a lower end portion of the spring storage section 36 a has alarge opening section capable of being inserted the spring 38 easily. Anopening-end periphery portion of the opening section is formedcontinuously. The opening section does not spread further while beingdeformed caused by rebounding force of the stored spring 38.Furthermore, in the condition that the pedestal 30 is united with thepedestal housing 36, an opening section outer periphery surface 37 c ofthe spring storage section 36 a is inserted into a cylindrical convexedge 30 a provided at periphery of the pedestal 30. In other words, thecylindrical convex edge 30 a of the pedestal 30 covers the openingsection periphery surface 37 c of the spring storage section 36 a. Sincethe spring storage section 36 a made of the synthetic resin molding isreinforced, the spring storage section 36 a has a construction capableof withstanding rebounding force of the spring 38 sufficiently.

A outer end portion of the spring 38 takes the shape of “T”. Thus, theouter end portion is formed broadly. The outer end portion is engaged tobe hanged to window hole 37 a provided at a side wall 37. Since a rib 37b provided along the window hole 37 a reinforces the side wall 37 at theperiphery of the window hole 37 a, the rib 37 b secures strength for thesake of spring maintaining. An inner end portion of the spring 38 isengaged to be hanged to a spring winding shaft 39 by a hooking pin 39 a.On the other hand, the spring winding shaft 39 whose one end portion isprotruded from the pedestal 30 while being supported to be inserted intoa bearing 60 provided at the pedestal 30. A protruded end portion of thespring winding shaft 39 is provided with a joining section 39 b forjoining a winding handle of the spring not illustrated. A diminisheddiameter step portion formed at another end of the spring winding shaft39 is supported to be inserted into a bearing hole 41 provided atceiling plate of the pedestal housing 36, thus the step portion comesinto contact with the ceiling plate.

Further, the pedestal housing 36 is provided with a bracket 54protruding along elongated surface of the ceiling plate. The bracket 54is provided with a bearing 56 for supporting upper end of a wormrotating shaft 26 of the governor rotating body 25, and a braking slipsurface for braking rotation of the governor rotating body 25 whileslipping to be touched to a braking piece 25 a of the governor rotatingbody 25.

The pedestal 30 which constitutes the supporting unit 40 whilecooperating with the pedestal housing 36 comprises a bearing 60 forsupporting the spring winding shaft 39 which engages with a spring gear58 in the condition of ratchet-engaging while passing through the springgear 58, a spring gear supporting stand 60 b including a slippingsurface 60 a for supporting the spring gear 58 while slipping to becontacted to the base of the spring gear 58 in the surrounding of thebearing 60, upper-opening supporting sections 42, and 43 for supportingrotating shaft of the composite spur gears 32, and 33, and a bearing 28for supporting the governor rotating body 25 capable of rotation,cooperated with a bearing 56 provided at the side of the pedestalhousing 36 while supporting lower end of the worm rotating shaft 26.Further, since a protruded positioning pin 30 b is provided at the baseside opposite to the bearing 28 for deciding position of the supportingunit 40, it is capable of securing sufficient strength while securingthickness of the pedestal 30 of lower end portion of the worm rotatingshaft 26. Furthermore, the bearing 60 performs positioning between thepedestal 30 and the base frame 12 while cooperating with the positioningpin 30 b in accordance with engagement with through hole of the baseframe 12.

The spring winding shaft 39 engages to be hooked with an inner endportion of the spring 38 by the hooking pin 39 a. The spring windingshaft 39 passes through the spring gear 58. The spring winding shaft 39constitutes one directional clutch through well known ratchet means 64cooperated with above spring gear 58. Further, slipping section of thebase of the spring gear 58 is formed at circular shaped protrudedsurface 58 a along outer periphery such that slipping resistance islessened between the base and the slipping surface 60 a. Further, it issuitable that a slipping surface 60 a at the side of the pedestal 30 istaken to be slipping protruded surface instead of the circular shapedprotruded surface 58 a of the spring gear 58.

In the present embodiment, the bearing 60 is engaged directly with thethrough hole of the base frame 12. However, it is suitable thatcylindrical portion of the spring gear supporting stand 60 b includingthe slipping surface 60 a of the pedestal 60 is protruded to be formedto opposite side to the slipping surface 60 a, thus engaging withcorresponding through hole provided at the base frame 12.

The music box device 10 constituted in such a,way of described above,the pedestal 30 of the supporting unit 40 is integrated with supportingsections 42, and 43 by the synthetic resin, therefore, friction loss ofthe bearing is reduced. So it is capable of transferring stored force ofthe spring in high efficiency without loosing the stored force halfway.Furthermore, since the supporting unit 40 with sufficient stiffness isfixed to the base frame 12 made of metal plate material with plasticdeformation processing through the pedestal 30, there is effect offurther strengthening stiffness of the base frame 12.

When the supporting unit 40 is mounted on the base frame 12, a unitedsection 39 b which couples the spring winding handle is protruded fromthe base 19 of the base frame 12, therefore it is capable of performingwinding operation of the spring 38 while connecting appropriate handlemeans not illustrated to a protrusion portion of the spring windingshaft 39.

Reference numeral 45 is a bearing frame of the rotary drum 22. Thebearing frame 45 is formed in one body while bending a part of elongatedportion of the base frame 12 perpendicular to the elongated portion.Further, a flange 68 demarcates one side of end surface of the rotarydrum 22, whose periphery wall of a center hole 69 is formed in thecondition of taper surface. The flange 68 capable of rotation issupported at the taper surface of a pointed end of a pivot shaft 46screwed in a boss section 47 protruded from the bearing frame 45. Acompressed coil spring 48 intervenes between the bearing frame 45 andthe flange 68 of the rotary drum 22, thus being functioned as elasticbody for compressing the rotary drum 22 in the thrust direction. Theelastic body is not limited to the coil spring.

On the other hand, the small bevel gear 65 engaging with the spring gear58, which is integrated with the spring winding shaft 39, an orthogonalrotating shaft 66, and the composite spur gear 31, demarcates one sideof end surface of the rotary drum 22. The rotating shaft 66 is supportedto be inserted into the bearing hole 50 provided at a spring storage boxside wall 52 of the supporting unit 40. The spring storage box side wall52 and rotating surface of the small bevel gear 65 keep slippingcondition with appropriate pressing force according to pressurization inthe thrust direction due to the compressed coil spring 48. According tothis constitution, vibration transfer loss caused by gap is reduced, aswell as the rotary drum 22 is capable of rotating smoothly with stablespeed with related position in the shaft direction to the vibrationplate 15 maintained accurately.

An output shaft 70 provided in parallel to the rotary drum 22 issupported by a bearing hole 72 of the spring storage box side wall 52and a bearing hole 71 of the bearing frame 45. A pinion 73 integratedtherewith engages with the composite spur gear 31 to rotate. The pinion73 supplies power to a mechanical device such as toy or doll notillustrated. When the rotary drum 22 is mounted between the pedestalhousing 36 and the bearing frame 45, the composite spur gear 31 isjoined to the speed increasing gear train 34 capable of rotationsupported by the supporting unit 40, thus rotation of the composite spurgear 31 is transferred to a worm gear 75 integrated with a compositespur gear 33 through the composite gear 32, then rotating the governorrotating body 25 in high speed under predetermined braking. Further, theoutput shaft 70 is provided according to demand of usage. Thus, when itis unnecessary to supply power to the mechanical device such as a toy ora doll, or when output to the another direction is performed, the outputshaft is not required.

Next, there will be described about operation of the music box device 10concerning the present invention, in the constitution described-above.When a person winds the spring 38 manually while connecting appropriatehandle means to the spring winding shaft 39, rebound force is stored.Since the ratchet means 64 exists, rotation of the spring winding shaft39 according to winding manipulation is not transferred to the springgear 58. When the spring winding shaft 39 is set free while stoppingwinding manipulation, stored force of the spring 38 is released, thespring winding shaft 39 rotates the spring gear 58 through the ratchetmeans 64.

The small bevel gear 65 engaged with the spring gear 58 rotates whileinterlocking the spring gear 58 together with the composite spur gear 31and the rotary drum 22 which are integrated with the small bevel gear65. At this time, the engaging pin 80 arranged in accordance withspecific musical composition on the rotary drum 22 snaps correspondingpointed end of the vibration valve 78, thus performing an individualscale of the vibration valve 78. The output shaft 70 rotatessimultaneously to output rotation to interlocking mechanism such as forinstance a doll not illustrated.

On the other hand, the rotation transferred to the speed increasing geartrain 34 rotates the governor rotating body 25 in high speed, thuscontrolling radiation at one stroke of stored force of the spring 38 dueto the friction resistance between the braking piece 25 a of thegovernor rotating body 25 and a braking slipping surface 54 a, toperform rotation of the rotary drum 22 smoothly, thus keeping tempo ofthe performance appropriately. Since a bearing section for supporting arotating shaft of a drive mechanism within the supporting unit 40 isintegrated with the pedestal 30 and the pedestal housing 36 withsynthetic resin, friction resistance of the bearing is reduced, andenergy loss of the spring is lessened, thus load is reduced, with theresult that it is capable of increasing storing capacity in thepredetermined volume.

Next, there will be described a second embodiment of a music box device110 concerning the present invention referring to FIG. 5. The music boxdevice 110 does not possess a united supporting unit 40 such as thefirst embodiment, but possessing two units of a power unit 115 and agovernor mechanism unit 116 separated from a base frame 117. The contourof the power unit 115 constituted according to a spring storage section114 and a storage section cover 114 a. The power unit 115 accommodates aspring gear 111 containing a ratchet means not illustrated and a springwinding shaft 113 for engaging to be hooked a spring 112 and an innerend portion of the spring 112 due to a hooking pin 118 while supportingthe spring winding shaft 113 capable of rotation. It is suitable thatthe spring storage section 114 is integrated with the storage sectioncover 114 a according to appropriate means such as caulking. Further,the power unit 115 and the governor mechanism unit 116 are united to befixed to the base frame due to appropriate uniting means such as a screwand so forth. Furthermore, the governor unit mechanism 116 undergoesaccurate positioning in that a positioning pin 117 a is engaged with apositioning hole 116 a. Moreover, 117 b, 117 c, 117 d are screwing holesof the power unit 115 and the governor mechanism 116. Reference numeral119 is a retaining ring for controlling movement in the thrust directionof the spring winding shaft 113. The common parts to the firstembodiment are indicated by the same signs as that of the firstembodiment to omit description.

Here, the spring storage section 114 made of metal is formed dependingon press drawing processing. The storage section cover 114 a is made ofsynthetic resin. The storage section cover 114 a keeps slipping betweenthe storage section cover 114 a and the spring gear 111 appropriately,thus supporting the spring gear 111. In the meantime, the governormechanism unit 116 stores to be supported a speed increasing gear trainand a governor mechanism in the same way as the first embodiment. Ahousing of the governor mechanism unit 116 whose body portion made ofmetal is formed while performing press processing, and whose bearingsection made of synthetic resin is formed in such a way of outsertmolding in order to secure slipping performance of bearing section.

FIG. 6 to FIG. 9 are a third embodiment to a sixth embodiment indicatingrelationship between rotary drum and a bearing frame formed on the baseframe of the music box device concerning the present invention. FIG. 6is the third embodiment. In the third embodiment, a supporting shaft 122protruded from a bearing frame 121 of a base frame 120 depending ondrawing processing supports the rotary drum 22 (122) constituted in thesame way as the first embodiment. Since a compressed coil spring 123 asa pressurization means pressurizes the rotary drum 122 in the thrustdirection, the pivot bearing 46 in the first embodiment becomes useless.It is capable of also employing a leaf spring instead of the compressedcoil spring. Another signs indicate that members are common members ofthe first embodiment.

FIG. 7 is the fourth embodiment. In the fourth embodiment, a supportingshaft 131 is protruded from a bearing frame 130 to support a rotary drum132. Such a constitution is the same as that of the third embodiment.However, a leaf spring 133 as an elastic body, which is a pressurizationmeans for pressurizing the rotary drum 132 in the thrust direction. Theleaf spring 133 intervenes between a side surface of a small bevel gear134 integrated with the rotary drum 132 and a housing side wall 135.When the leaf spring 133 is formed in U-shape, it is capable ofinserting in the lateral direction after assembly of the rotary drum132, so, it is capable of simplifying assembly work.

FIG. 8 is the fifth embodiment. In the fifth embodiment, elasticfunction 141 as a pressurization means is given to a bearing frame 140,which protrudes a supporting shaft 142 to support a rotary drum 143, inthe same way as the third embodiment. The elastic function 141 is lowerside surface (illustrated in FIG. 8) of the supporting shaft 142 of abearing frame 140, which is formed by press processing such that surfaceopposite to the rotary drum 143 becomes thin, thus being easy to undergoelastic deformation. In this case, since there is the elastic function141 on the bearing frame 140, it is suitable to provide separately noelastic member.

FIG. 9 is the sixth embodiment. In the sixth embodiment, a rotatingshaft 152 capable of rotation, which is protruded from the center of aflange 151 of a rotary drum 150, which is supported by a bearing frame153, and which is pressurized by a compressed coil spring 154 in thethrust direction. The following matters are not illustrated. In thefifth embodiment, a reduced diameter portion capable of rotation formedon the pointed end of a rotating shaft protruded from the flange 151 ofthe rotary drum 150 is supported by a bearing frame 153. A leaf spring133 which is the same as that of the fifth embodiment intervenes betweena small diameter bevel gear 155 and a housing side wall 156, thuspressurizing the rotary drum 150 in the thrust direction. It is suitablethat pressurization force is supported by a reduced diameter stepportion of a rotating shaft 162.

In the third embodiment to the sixth embodiment indicated in FIG. 6 toFIG. 9, in the same way as the elastic body according to the compressedcoil spring 48 of the first embodiment, pressurization force in thethrust direction pressurized according to various kinds of elasticbodies 123, 133, 141, and 154 accurately maintains position relationshipconcerning direction of the rotating shaft between the engaging pin 80provided on the rotary drums 22, 132, 143, and 150 and pointed end ofthe comb shaped vibration valve 78, thus guaranteeing smooth rotation.Another constitutions in the third embodiment to the sixth embodimentindicated in FIG. 6 to FIG. 9 are capable of being executed whilecombining any of the first embodiment and/or the second embodimentvariously.

INDUSTRIAL APPLICABILITY

As described above, the music box device of the present invention is ofcourse capable of employing as an ordinary device only. In particular,since the spring drive mechanism and governor mechanism are constitutedinto independent unit construction separated from the base frame, thusbeing applicable to not only an device of base frame according toplastic deformation processing, but also various types of device of baseframe such as casting metal frame and so forth. Further, since the unitof the present invention can be also applied to as stable supply sourceof spring power, it is capable of being applied to a toy for instance,as parts material of assemble toys such as plastic model.

What is claimed is:
 1. A music box device comprising: a base frame; avibration plate which has a plurality of vibration valves arranged incomb-shape, being fixed to said base frame; a rotary drum which has aplurality of engaging pins arranged in accordance with predeterminedmusical composition, and said engaging pins snap to be sounded saidplurality of vibration valves while engaging with said vibration plate;a spring drive mechanism which has a spring winding shaft for winding aspring, for driving said rotary drum; a governor mechanism which has aspeed increasing gear train for increasing speed of rotation of saidspring drive mechanism and a governor rotating body positioned at finalstage of said speed increasing gear train for governing rotation of saidrotary drum; a housing which stores therein said spring, and which formstherein a first bearing section for supporting one end of rotating shaftcapable of rotation of said governor rotating body; and a pedestal madeof synthetic resin, which forms therein a second bearing section forsupporting another end of rotating shaft capable of rotation of saidgovernor rotating body, and which forms therein a supporting member forsupporting said speed increasing mechanism capable of rotation, andwhich is fixed on said base frame and wherein said base frame is made ofmetal plate material and a plural of ribs are formed in the neighborhoodof mounting surface of said vibration plate of said base frame as wellas in the neighborhood of said rotary drum, and a part of the ribextends to the second bearing section formed on said pedestal made ofresin.
 2. A music box device according to claim 1, wherein said pedestalmade of resin has a protruded positioning pin that is engaged with saidbase frame.
 3. A music box device according to claim 2, wherein saidpositioning pin is formed in the neighborhood of a second bearingsection formed at said pedestal made of resin.
 4. A music box deviceaccording to claim 1, wherein said housing forms therein a first springbearing section for supporting one side of said spring winding shaftcapable of rotation, and said pedestal made of synthetic resin formstherein a second spring bearing section for supporting another end ofsaid spring winding shaft capable of rotation.
 5. A music box deviceaccording to claim 4, wherein said second spring bearing section isinserted to be fitted to a hole formed on said base frame.
 6. A musicbox device according to claim 4, wherein said spring winding shaftprovides therein one directional ratchet mechanism which does nottransfer rotation of said spring winding shaft on the occasion of springwinding, while when stored force of said spring is released, rotation ofsaid spring winding shaft is transferred, and wherein a slipping sectionfor supporting said one directional ratchet mechanism capable ofslipping rotation is formed on circumference with said second springbearing section as center.
 7. A music box device according to claim 6,wherein at least one of the base of said ratchet mechanism whileslipping to be contacted to said slipping contact section and saidslipping contact section is formed on circular shaped convex portion. 8.A music box device according to claim 6, wherein said slipping contactsection is provided on end surface of cylindrical portion formed at saidpedestal, and said cylindrical portion is engaged with a hole formed onsaid base frame.
 9. A music box device according to claim 1, whereinsaid pedestal made of synthetic resin forms therein a supporting sectionhaving U-shaped opening for supporting rotating shaft capable ofrotation of transfer gear constituting said speed increasing gear train,and wherein said housing forms therein a contact close section forpreventing floating of rotating shaft of said transfer gear by closingsaid U-shaped opening while being faced to said supporting section. 10.A music box device according to claim 9, wherein a pedestal side hookingsection is formed at said pedestal made of synthetic resin in theneighborhood of said contact close section, and a housing side hookingsection for being engaged with said pedestal side hooking section isformed on said housing.
 11. A music box device according to claim 9,wherein said storage section for storing said spring is provided withmaintaining section for hooking outer end portion of said stored springat a side wall thereof, and a reinforcement rib is protruded to beprovided in the neighborhood of said maintaining section.
 12. A musicbox device according to claim 1, wherein said housing has a storagesection for storing said spring and an opening section for insertingsaid spring into said storage section, further said pedestal made ofsynthetic resin has cylindrical protruded edge in which said cylindricalconvex edge is fitted into an outer periphery of said opening section inthe direction of the spring winding shaft, furthermore said cylindricalconvex edge covers outer periphery of said opening section.
 13. A musicbox device according to claim 1, wherein said base frame is formed inaccordance with plastic deformation processing of metal plate material,and a bearing frame for supporting another side of said rotary drum isformed into one body while bending, a part elongated from said baseframe perpendicular to the base frame.
 14. A music box device accordingto claim 13, wherein a drum bearing section provided at said bearingframe supports said rotary drum capable of rotation, and an elastic bodyfor pressurizing said rotary drum in the thrust direction intervenesbetween said rotary drum and the bearing frame.
 15. A music box devicecomprising: a base frame; a vibration plate which has a plurality ofvibration valves arranged in comb-shape, being fixed to said base frame;a rotary drum which has a plurality of engaging pins arranged inaccordance with predetermined musical composition, and said engagingpins snap to be sounded said plurality of vibration valves whileengaging with said vibration plate; a spring drive mechanism including aspring of drive source for driving said rotary drum; a governormechanism for governing rotation of said rotary drum; a unit supportingmeans for supporting independently said spring drive mechanism and saidgovernor mechanism separately from said base frame; and a unit which issupported independently due to said unit supporting means, beingarranged on said base frame and wherein said base frame is made of metalplate material and a plural of ribs are formed in the neighborhood ofmounting surface of said vibration plate of said base frame as well asin the neighborhood of said rotary drum, and a part of the rib extendsto the second bearing section formed on said pedestal made of resin. 16.A music box device according to claim 15, wherein said unit supportingmeans comprises: a pedestal for supporting said spring drive mechanismas well as said governor mechanism, which pedestal is made of syntheticresin such that said pedestal is capable of being fixed on said baseframe; and a housing which has a spring storage section for storing saidspring, for supporting said governor mechanism and said spring drivemechanism in cooperation with said pedestal.
 17. A music box deviceaccording to claim 16, wherein a supporting section of U-shaped openingfor supporting rotating shaft capable of rotation of transfer gearconstituting speed increasing gear train of said governor mechanism isformed at said pedestal made of synthetic resin, further a contact closesection for preventing floating of the rotating shaft of said transfergear by closing said U-shaped opening in face of said supporting sectionis formed at said housing, furthermore a pedestal side engaging sectionis formed at said pedestal made of synthetic resin in the neighborhoodof said contact close section, and a housing side engaging section forbeing engaged with said pedestal side engaging section.
 18. A music boxdevice according to claim 16, wherein said spring winding shaft providestherein one directional ratchet mechanism which does not transferrotation of said spring winding shaft on the occasion of spring winding,while when stored force of said spring is released, rotation of saidspring winding shaft is transferred, and wherein a slipping section forsupporting said one directional ratchet mechanism capable of slippingrotation is formed on said pedestal.